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Driving a lumped hydrological model with precipitation output from weather generators of different complexity
2016 (English)In: Hydrological Sciences Journal, ISSN 0262-6667, E-ISSN 2150-3435, Vol. 61, no 8, 1395-1414 p.Article in journal (Refereed) Published
Abstract [en]

This paper deals with the question of whether a lumped hydrological model driven with lumped daily precipitation time series from a univariate single-site weather generator can produce equally good results compared to using a multivariate multi-site weather generator, where synthetic precipitation is first generated at multiple sites and subsequently lumped. Three different weather generators were tested: a univariate “Richardson type” model, an adapted univariate Richardson type model with an improved reproduction of the autocorrelation of precipitation amounts and a semi-parametric multi-site weather generator. The three modelling systems were evaluated in two Alpine study areas by comparing the hydrological output with respect to monthly and daily statistics as well as extreme design flows. The application of a univariate Richardson type weather generator to lumped precipitation time series requires additional attention. Established parametric distribution functions for single-site precipitation turned out to be unsuitable for lumped precipitation time series and led to a large bias in the hydrological simulations. Combining a multi-site weather generator with a hydrological model produced the least bias.

Place, publisher, year, edition, pages
2016. Vol. 61, no 8, 1395-1414 p.
National Category
Oceanography, Hydrology, Water Resources
Identifiers
URN: urn:nbn:se:uu:diva-297149DOI: 10.1080/02626667.2015.1036755OAI: oai:DiVA.org:uu-297149DiVA: diva2:940933
Funder
EU, FP7, Seventh Framework Programme, 263953
Available from: 2016-06-21 Created: 2016-06-21 Last updated: 2016-06-21

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Breinl, Korbinian
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